WHY METRO UI?Because it's very clean, modern and fast. No unnecessary elements - no problems.

WHY NETRO?It's just my idea. I thought about something New, but still in Metro UI-look. And so was born Netro

WHY THERE ARE ANY MARKETPLACE AND / OR MIXVIEW OPTIONS?I decided not to input these options, because they aren't part of Windows as an OS. If you want to go to Marketplace or to mixview a band / album / song, just launch your Zune Software or Internet browser.